Question

factors of 16 x - 72 x y + 81 y - 12 x + 27 y are​

Answer 1

$16x - 72xy + 81y - 12x + 27y \\ \\ 27y + 81y - 12x + 16x - 72xy \\ \\108y + 4x - 72xy \\ \\ 108y + 4x(1 - 18y)$